中文摘要：

为解决目前滚刀极径布置研究中多采用V型滚刀、未考虑边滚刀变切深的特性并忽略了全断面岩石掘进机(TBM)刀盘剖面轮廓与滚刀极径布置的耦合机制问题，提出了一种基于刀盘剖面轮廓的滚刀极径布置的适应性设计方法．基于CSM受力模型，以最外侧边缘滚刀的轴承受力为评价指标，根据刀盘过渡区域大小、过渡圆弧半径及安装倾角范围之间的关系，确定其剖面轮廓．推导出常截面滚刀的破岩量公式和基于变切深的边滚刀磨损量公式．采用遗传算法，基于等寿命原则，对中心刀和正刀的极径进行优化设计；基于等磨损原则，建立非线性数学模型，对边刀的倾斜角进行优化设计．以MB264-311-8030mm型TBM刀盘为例，计算结果表明，与原始滚刀极径相比，51把滚刀中最大差距仅有25.8,mm，为刀盘半径的0.64%，可忽略不计，充分验证了该方法的可行性和有效性.

英文摘要：

In present studies,V-shaped cutters are used widely;the characteristic of gage disc cutters’ variable cuttingdepth fails to be considered,and the coupling mechanism between the profile of full-face rock tunnel boring machine(TBM)cutterhead and the assembled radii layout of the disc cutters is ignored.In order to solve theseproblems,an adaptive design method based on the profile of the cutterhead was proposed to study assembled radiuslayout of disc cutters.Based on the CSM model,taking the bearing stress of the outermost gage disc cutter asindex,and according to the relationship between the size of cutterhead’s transition zone,the fillet radius and theinstalled tilt angle,its profile was determined.The calculation formula of rock breaking amount for cutters with constantcross section and the formula of calculating wear extent for gage cutters based on its characteristic were derived.Using genetic algorithm and based on the principle of equal life,the assembled radii of center cutters and normalcutters were optimally designed;based on the principle of equal wear,a nonlinear mathematics model was establishedand the tilt angles of the gage cutters were optimally designed,too.Exemplifying the MB264-311-8030mmtype TBM cutterhead,the calculation results show that compared with the original cutters’ assembled radii,amongthe 51 disc cutters,the biggest gap is only 25.8,mm,which is 0.64%,of the cutterhead’ radius and is negligible,fully verifying the feasibility and effectiveness of the method.